Search results for "PsyArXiv|Neuroscience|Behavioral Neuroscience"
showing 10 items of 8055 documents
Pourquoi j'ai encore faim ?
2019
Comment les sensations de faim et de satiété sont produites par notre cerveau ? Quelle zone de notre cerveau va s’activer aux horaires des repas et sur la base de quelles stimulations ? À travers quelques exemples, Alexandre Benani illustrera l’importance du dialogue entre nos organes et notre cerveau dans l’élaboration de ces sensations.
Système olfactif et neurobiologie
2006
Les connaissances neurobiologiques sur l’odorat progressent désormais rapidement depuis la découverte des récepteurs des odorants, remarquables par leur grand nombre et leur diversité. Des réponses sont maintenant apportées aux questions posées par les propriétés originales de la perception olfactive dont beaucoup sont déterminées dès le niveau de l’organe olfactif, et sont fortement déterminées par la génétique. Les connaissances génétiques sur les récepteurs dévoilent une considérable réduction du nombre de gènes olfactifs fonctionnels dans l’espèce humaine et alimentent une réflexion sur l’évolution de l’odorat. Autre avancée riche de promesses : l’application à l’olfaction des méthodes …
Kísérlet egy összehasonlító vizsgálatra : a nyelvi tájkép dél-szlovákiai, székelyföldi és kárpátaljai falvakban
2017
A tanulmany hat falu nyelvi tajkepenek altalanos jellemzeset adja, es az eredmenyeket osszehasonlitja egyreszt egymassal, masreszt korabbi, az altalanos nyelvi helyzetet osszefoglalo munkakkal. Egy-egy olyan del-szlovakiai, szekelyfoldi es karpataljai falu kerul bemutatasra, ahol a telepulesen beluli szobeli kommunikacio nyelve egyontetűen a magyar, illetve egy-egy olyan falu, melyet szobeli ketnyelvűseg jellemez. A tanulmany masodik resze a felirattipusokat, ezek ketnyelvűseget elemzi. Vegul osszehasonlitjuk az eredmenyeket azzal az altalanos keppel, amit egyeb szociolingvisztikai kutatasok alapjan alkothatunk az adott regiokban elő magyarok nyelvhasznalatarol. Kulcsszavak: nyelvi tajkep, …
The odour of human milk: Its chemical variability and detection by newborns
2019
International audience; Human milk odour has for long elicited research interest with regard to its function in breastfeeding initiation. The present review aims to provide an overview of the behavioural effects of human milk odour in the human neonate, considering different types of response measures in a feeding or non-feeding context. Further, an overview of the current knowledge of odorant composition and factors influencing milk odour is provided by summarizing results from analytical studies using olfactometry, and addressing changes in milk odour due to storage, lactational stage, and maternal dietary intake of odorous substances. We finally highlight some issues for future research.
Developing an open science mindset.
2022
Background: Identification of widespread biases present in reported research findings in many scientific disciplines, including psychology, such as failures to replicate and the likely extensive application of questionable research practices, has raised serious concerns over the reliability and trustworthiness of scientific research. This has led to the development of, and advocacy for, ‘open science’ practices, including data, materials, analysis, and output sharing, pre-registration of study predictions and analysis plans, and increased access to published research findings. Implementation of such practices has been enthusiastic in some quarters, but literacy in, and adoption of, these pr…
School achievement in adolescence and the risk of mental disorders in early adulthood: a Finnish nationwide register study
2023
AbstractSchool grades in adolescence have been linked to later psychiatric outcomes, but large-scale nationwide studies across the spectrum of mental disorders are scarce. In the present study, we examined the risk of a wide array of mental disorders in adulthood, as well as the risk of comorbidity, associated with school achievement in adolescence. We used population-based cohort data comprising all individuals born in Finland over the period 1980–2000 (N = 1,070,880) who were followed from age 15 or 16 until a diagnosis of mental disorder, emigration, death, or December 2017, whichever came first. Final grade average from comprehensive school was the exposure, and the first diagnosed ment…
Selective breeding for endurance running capacity affects cognitive but not motor learning in rats
2012
The ability to utilize oxygen has been shown to affect a wide variety of physiological factors often considered beneficial for survival. As the ability to learn can be seen as one of the core factors of survival in mammals, we studied whether selective breeding for endurance running, an indication of aerobic capacity, also has an effect on learning. Rats selectively bred over 23 generations for their ability to perform forced treadmill running were trained in an appetitively motivated discrimination-reversal classical conditioning task, an alternating T-maze task followed by a rule change (from a shift-win to stay-win rule) and motor learning task. In the discrimination-reversal and T-maze …
Disrupting neural activity related to awake-state sharp wave-ripple complexes prevents hippocampal learning
2012
Oscillations in hippocampal local-field potentials (LFPs) reflect the crucial involvement of the hippocampus in memory trace formation: theta (4–8 Hz) oscillations and ripples (~200 Hz) occurring during sharp waves are thought to mediate encoding and consolidation, respectively. During sharp wave-ripple complexes (SPW-Rs), hippocampal cell firing closely follows the pattern that took place during the initial experience, most likely reflecting replay of that event. Disrupting hippocampal ripples using electrical stimulation either during training in awake animals or during sleep after training retards spatial learning. Here, adult rabbits were trained in trace eyeblink conditioning, a hippoc…
Brain-Related Research as a Support Mechanism to Help Learners to Acquire Full Literacy
2023
Possibly some of the most important skills that one can have are those needed to become fully literate. We all wish our children to reach such a goal. Unfortunately, the focus of attention in reading research has been on acquiring readiness to sound out written language, i.e., the basic reading skills. Full literacy is the readiness to learn knowledge by reading. Thus, one has to be able to take two steps to reach full literacy. Indications related to both of these steps can be observe in the brain. This may be easiest when we observe the brain activity of a learner who faces difficulties in taking these steps. In fact, the serious difficulty of taking the first step can be observed soon af…
The Role of Teacher Closeness in Emotions and Achievement for Adolescents With and Without Learning Difficulties
2022
Student–teacher relationships are crucial for adolescents’ adjustment in the school context. The aim of the present study was to examine the role of teacher closeness in academic emotions and achievement among adolescents with and without learning difficulties during the first year in lower secondary school. Students’ learning difficulties (LDs) were identified based on tested reading and math skills. In addition, students evaluated their teacher relationships and rated academic emotions in literacy and math domains. The results indicated that higher teacher closeness was related to increasing positive emotions and increasing literacy achievement during seventh grade, whereas lower levels …